<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div
            v-for="(item, index) in titles"
            class="title-item"
            :class="{active: index == currentIndex}"
            @click="titleClick(index)"
        >
          {{item}}
        </div>
      </div>
    </nav-bar>
  </div>

</template>

<script>
import NavBar from "components/common/navbar/NavBar";
export default {
  name: "DetailNavBar",
  components: {
    NavBar
  },
  data() {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex: 0
    }
  },
  methods: {
    titleClick(index) {
      this.currentIndex = index;
      this.$emit('titleClick', index);
    },
    backClick() {
      this.$router.back();
    }
  }
}
</script>

<style scoped>
.title {
  display: flex;
}
.title-item {
  flex: 1;
  font-size: 13px;
}
.active {
  color: var(--color-high-text);
}
.back img {
  margin-top: 12px;
}

</style>